For the calculation, you need to give credit to Sukhumvit Hotel + Vat7% +% ServiceCharge10 + breakfast (you buy youself) + price taxi back to my hotel with more or less than that I proposed (the total price)
For hotels, you have to calculate that margin. The Sukhumvit Hotel + Vat7% + ServiceCharge10% + breakfast (you buy youself) + price taxi back to my hotel more or less than the price that I offer. (A total price already).
For the hotel. You must advance the calculated that the hotel Sukhumvit Vat7% ServiceCharge10% breakfast (you buy youself), the price of a taxi to my back. More or less, with hotel prices I offer (total price).